Sheet handling method



Nov. 27, 1945. A. L HEss SHEET HANDLING METHOD Filed Sept. 25, 1942 5Sheets-Sheet 1 Jess.

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Nov. 27, 1945. A. H555 2,389,854

SHEET HANDLING METHOD Fild Sept. 25, 1942 5 Sheets-Sheet 2 A. L. HESSSHEET HANDLING METHOD Filed Sept. 25, 1942 51Sheets-Sheet 3 INVENTOR.UQrZzurl-J. Q7-[esa 82M wmugwwd 7 W- .Z HHG O Ou f i n Nov. 27, 1945. A.L. HEss 2,389,854

SHEET HANDLING METHOD Filed Sept. 25, 1942 5 Sheets-Sheet 4 INVENTOR.

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Nov. 27, 1945. A. L. HESS SHEET HANDLING METHOD 5 Sheets-Sheet 5 FiledSept. 25, 1942 nobr-umu.: .10 H v1 DOE www IN V EN] OR. Jqr'zzhur- L-$186.5'.

BY Y l Patented- Nov. 27V,l 1 945 sHEE'r HANDLING METHOD Arthur L. Hess,Cincinnati, Ohio, assignor to Ditto, Incorporated, Chica West Virginiago. Ill., a corporation of Application September 25, 1942, Serial No.459,725

v2 Claims.

vThe present invention relates to printing presses and is particularlydirected to a novel combination whereby a cylinder press such as aMiehle vertically moving bed cylinder type press l can be caused tocrimp together a sheet to be printed upon and one or more underlyingsheets as the sheets are advanced by the cylinder to printing position.A preferred form of th'e inlvention is embodied in a printing press ofthe type above referred to and comprises a set of crimping dies on thegripper bar of the impression cylinder and a corresponding set of dieslocked into the chase of the press. The invention is shown in connectionwith a standard Miehle press of the type above referred to. However, itis obvious that the invention is not limited to the particular press butas will be pointed out hereinafter it is applicable to any cylinderpress of the same general type.

It is a .further object of the present invention to provide a novelapparatus andmethod for printing adapted to perform, in a singleprinting operation, the crimping together of a, master sheet and anunderlying carbon sheet so that they are releasablyfastened together,printing upon one side of-the master sh'eet directly by the press, andimprinting the same message on the opposite side of the master sheet inreverse whereby the master sheet-may be used in a direct processduplicating operation to make copies of the matter imprinted thereon. y

It is a further and more specific object of the invention to provide anattachment for a cylinder press whereby a plurality of sheets arrangedin superposed relation and gripped by the impression cylinder may becrimped together as the printing press performs its usual printingcycle.

The features and advantages of the invention will appear more fully asthe description proceeds, reference being made to the accompanyingdrawings wherein a preferred form of the invention is shown.

In the drawings:

Fig. 1 is a longitudinal sectional view through a printing press, takenon the line I-I of Fig. 2;

Fig. 2 is a. plan sectional view taken on the line 2 2 of Fig. 1;

Fig. 3 is an enlarged fragmentary sectional view taken on the line 34 ofFig. 2;

Fig. 4 is a fragmentary. sectional view on an enlarged scale of aportionof the construction shown in Fig. 3 but showing the parts indifferent position;

Fig. 5is a vertical sectional view taken on the line 5-5 of Fig. 3;

Fig. 6 is a perspective view of a completed printed master and carbonsheet assembly such as would be turned out by the press;

Fig. '7 is an enlarged front face view of the printing chase showing theprinting plate mounted in position;

Fig.r 8 is a sectional view taken on the line 8-8 of Fig. 7;

Fig. 9- is a perspective view illustrating the mounting of the crimpingdies upon the gripper bar of the impression cylinder; and Fig. 10 is anenlarged fragmentary sectional view ltaken on the line I Il-I 0 of Fig.6 showing how the sheets are crimped together.

Referring now in detail toth'e drawings, the present invention isembodied in a printing press such as a Miehle vertical cylinder typepress wherein the numeral II indicates the vertically reciprocating bedof the press. The numeral I2 indicates a gear rack which is formed alongone side edge of the press and which is adapted to engage a gear I4 atone end of an impression cylinder I3. The impression cylinder isjournaled in th'e frame of the press on a shaft I5, the frame beingindicated at I6. A series of inking rollers is shown at ISA.

The cylinder I3 is carried by the frame I 6, which frame also carries afeedgtray I l upon which sheets are adapted to be fed by a suctionfeeder I8 from a pile of sheets I9. The construction of the suctionfeeder and its operation form no part of the present invention exceptinsofar as they may be said to pick up sheets in a well known manner anddeposit them upon the feed tray I1. A receiving tray 20 is adapted toreceive the sheets after they are printed upon, suitable means, notshown, being utilized to take the sheets from the printing cylinder I3and deposit them upon the receiving tray 20. In the usual press of thistype another arm similar to the suction feed arm here which carries thesuction device I8 removes the sheets from the cylinder and deposits themupon the tray 20.

It will be observed that the' bed II is guided in th'e main frame of themachine for vertical movement and that it carries racks 2| which meshwith two drive gears 22. The drive gears 22 also mesh with racks 23-that are attached to the frame I6. The operation of a press of this typeis as follows: in th'e initial'stroke of the press the gears 22 rotatein the direction indicated by the arrow thereon so as to move the bed II downwardly while the framev I6 is moved upwardly. On this down strokethe inking rollers ISA ink a printing plate on the bed II. The directionof 2 rotation of the gears 22 is then reversed and th'e bed II is movedupwardly carrying with it the i the frame of the bed II. 'Ihe chasewhich is a rectangular metal frame mounts a backing plate 29 whichcarries a printing plate 39 that may be of soft rubber for certain typesof printing and may be hard for other types of printing. 'I'he printingplate is held in the chase by filler bars such as are indicated at 3|and 3IA, the assem bly being locked in place by quoins indicated at 32.

In accordance with my invention the chase carries a crimping diemounting bar 33 (see Figs. 7 and 8) at its lower extremity. This bar hasa series of elongated slots 34 therein that are adapted to receive aplurality of screws 35 that are threaded into the wall of the chase. Inaddition the bar 33 has two stops 36 and 31 at its opposite ends, thestops comprising polygonal headed, screw threaded pins that are threadedinto the ends of the bar 33. A plurality of positioning screws 38 arealso provided in the bar, these screws extending horizontally throughthe plate from the front to the back so as to serve to position theplate with respect to the bed of the press. A series of crimping dies 39is fastened on the bar 33 by means of screws 40. In the present instanceI have shown, four of these crimping dies although of course a bar maybe. fitted with more or less of them, depending upon the nature of thework. It will be evident from the foregoing description that the bar 33may be adjusted lengthwise in the chase and locked in position by thescrews 35. It mayvalso be adjusted toward and away from the bed of thepress by means of the screws 38. Since the chase itself can be adjustedvertically by means of the pins 25 and 26 universal adjustment of thebar 33 and the dies that it carries may be accomplished'.

Referring now to Figs. 3 to 6 and 9, it will be observed that thecylinder I3 carries a gripper bar 4I which mounts a multiplicity ofgripper pins 42. These gripper pins in known presses of the type abovereferred to are normally spring pressed by means of a number of springs43 mounted in the bar 4I toward gripping position. The cylinder carriesa cam shaft 44 having arms 45 thereon that are adapted to force the pins42 outwardly against the tension of springs 43 in certain positions ofthe cylinder so as to permit the insertion of sheets to be printed upon.Such sheets are indicated in Fig. 3, for example, on the feed tray I1 bythe numeral 48. The gripper bar 4I is releasably mounted in the cylinderby means of a bracket 41 and a clamping screw 48. There is however noparticular adjustment of the gripper bar 4I; it bears against theinturned edges of a plurality of backing sheets 49 and a tympan sheet 50that are mounted on the cylinder I3. The gripper bar (see Fig. 9) alsocarries a multiplicity of crimping dies shown at I in Fig. 9. It will benoted that these dies are held by screws 52 and that additional threadedopenings indicated at 53 are provided in the event that it is desired toutilize a bar having additional crimping die:

thereon. The crimping dies 5I and the crimping dies 39 are of coursematched up by adjusting the bar 33 in the chase 24.'

In the operation of the press two sheets, for example, a plain whitemaster sheet 54 and a 4 hectograph carbon sheet 55 are arranged togetherin a stack I9 so that the two may be picked up at once by the suctiondevice I8 and fed to the tray I1. The Vparticular manner of picking upthe two sheets at once forms the subject matter of a 4separateapplication Serial No. 459,726 and will not be described further herein.It will be noted that thecarbon sheet 55 has a clear strip l5 along thetop edge thereof and this edge is the edge that is fed to the gripperpins 42. When the two sheets 54 and 55 are gripped by the 'gripper pins42 the clear portion 56 and a corresponding portion of the top sheet 54overlie the crimping dies 5I. This is indicated clearly in Fig. 2 of thedrawings wherein portions of the sheets 54 and 55 are broken away toexpose the crimpers 5I. On the downward printing stroke of the press,that is, after the printing plate has been inked and the sheets havebeen fed to the cylinder, the cylinder, in rotating, carries the sheetsbetween the dies 5I and the dies 39 and the dies are forced into thepaper so as to distort it and press the fibres of the two sheetstogether into the condition shown in Fig. 10. The section 58 of thesheet 55 is the portion that is engaged by the crimping dies so that thecarbon itself is not included in the crimped portion of 'the paper. Ihave found this to be particularly essential since the carbon tends todestroy the bond between the crimped sheets. If the printing stroke ofthe press continues the printing plate will impress its legend upon thesheet 54 in the usual manner. Moreover, whenever it is desired to havethis legend appear in reverse on the back of the sheet 54, for example,for use in making copies on a wet process duplicating machine, I usemetallic type, making a hard printing surface, and heavy pressure isexerted between the cylinder and the printing plate whereby to cause thecarbon sheet to imprint upon the back of the sheet 54. If this is notdesired then the use of the soft rubber printing plates makes itpossible to print the master sheet 54 without causing any smudging ofits back surface due to the carbon.

From the foregoing description it is believed to be evident that I haveprovided a simple, efficient apparatus whereby a plurality of sheets maybe secured together by crimping during the act of printing upon thesheets. It is obvious of course .necessary is to remove the printingplate, in which case the crimping operation can be carried out alone. s

While there have been shown and described certain embodiments of theinvention, it is to be understood that it is capable of manymodiilcations. Changes, therefore, may be made without departing fromthe scope of the invention as described in the appended claims, in whichit is the intention to claim all novelty inherent in the invention asbroadly as possible, in view of the prior art.

Having thus described my invention, what 1 claim as new and desire tosecure by Letters Patent is:

1. A method of printing upon a sheet and hectograph ink on the otherside thereof, said method comprising the application of a hectos.

graph carbon sheet to one face of a master sheet with the active face ofsaid carbon sheet toward the master sheet, mounting the superposedsheets with the master sheet on top upon an impression' cylinder of a,printing press, crimping the mounted sheets together along the advancingedges thereof, and bringing the cylinder against a hard printing platewith suiilcient pressure to cause the carbon sheet to deposit thehectograph ink in reverse on the back side of the master sheet as theform is printed directly on the front side thereof.

ARTHUR L. HESS.

